ATB Get a text book, and turn to page 864. On the Body Systems Illustration paper, draw and label the heart, lungs, and major blood vessels (veins and arteries). On the table on the back of the Body Systems Illustration paper, add the heart, lungs, and veins/arteries (if you don’t know their function, look them up in the Glossary)

1. How much air do you think you can hold in your lungs?

1. How much air do you think you can hold in your lungs? 2. How does pollution affect your lung volume?

Respiratory System Primary Function: obtaining oxygen and removing carbon dioxide Other functions: Filter air, produce sounds, sense of smell, regulation of blood pH

Respiration The process of gas exchange between the atmosphere and body cells Steps of respiration in humans: A. Move air into the lungs B. Gas exchange between blood and air C. Gas transport through the blood D. Gas exchange between the blood and body cells

Respiratory System

Lung Structure The alveoli are small balloon-like structures that are attached to the bronchioles. At the alveoli, O2 passes from the lungs into the blood, and CO2 passes from blood into the lungs (is exhaled).

Flow of Air

Inhalation

Exhalation

Respiration System Lab: Lung Volume Objectives: Measure the TIDAL VOLUME and VITAL CAPACITY of your lungs. Compare your measurements with your ESTIMATED tidal volume and vital capacity. Tidal Volume: How much air you breathe in a normal breath Vital Capacity: maximum amount of air you can breathe

Circulatory and Respiratory Systems Video How do the circulatory and respiratory systems work together to get O2 into your cells and remove CO2?